Elastic pin with dustproof surface

By coating the surface of the elastic pin with polytetrafluoroethylene and nanomaterials to form a superhydrophobic surface and designing a micro-nano structure, the problem of easy dust accumulation in the elastic pin is solved, achieving good dust prevention effect and elastic recovery performance.

CN224079439UActive Publication Date: 2026-04-03CHANGZHOU HANGTIE MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-17
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

Traditional elastic pins tend to accumulate dust and dirt on their surface after prolonged use, affecting their elasticity and lifespan.

Method used

The surface of the elastic pin is coated with polytetrafluoroethylene and nanomaterials to form a superhydrophobic surface. Micro- and nano-structures are designed on the surface, combined with silicone coating and polymer coating to enhance dust resistance.

Benefits of technology

It effectively prevents dust and dirt from adhering, and the water droplets roll off and carry away dust particles, reducing adhesion, ensuring the surface of the elastic pin is clean, and extending its service life.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an elastic pin with a dustproof surface, which comprises an elastic pin main body, a pin rod is inserted in the elastic pin main body, a spiral spring is sleeved on the surface of the pin rod, a polymer coating is coated outside the elastic pin main body, a silica gel coating is coated on the outer surface of the polymer coating, and the silica gel coating is coated on the outer surface of the elastic pin main body. A silica gel coating is arranged at the upper end of the elastic pin body, the outer surface of the silica gel coating is coated with a nano coating, the outer surface of the nano coating is coated with a polytetrafluoroethylene coating, a sealing plug is inserted into the upper end of the elastic pin body in a sealed mode, and a sealing cover is fixedly installed at the upper end of the sealing plug. According to the elastic pin, the elastic pin body is made of materials with self-cleaning performance, polytetrafluoroethylene and nanometer materials, the surface of the elastic pin is subjected to nanometer coating treatment, a super-hydrophobic surface is formed, dust and dirt are prevented from being attached, a micro-nanometer structure is designed on the surface of the elastic pin, and the dustproof effect is enhanced.
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Description

Technical Field

[0001] This utility model relates to the field of flexible pin technology, specifically to a flexible pin with a dust-proof surface. Background Technology

[0002] Spring pins, also known as elastic pins or flexible cylindrical pins, are fasteners used for mechanical connections and positioning. They are typically made of spring steel or stainless steel and have the ability to elastically deform, automatically returning to their original shape after installation, providing reliable connection and positioning effects. Spring pins are widely used in mechanical connections to fix and position parts. However, after prolonged use, traditional spring pins are prone to accumulating dust and dirt on their surface, affecting their elasticity and service life. Therefore, developing a spring pin with dust-proof properties is of great significance. Utility Model Content

[0003] The purpose of this invention is to provide an elastic pin with a dust-proof surface to solve the problem of dust accumulation in traditional elastic pins.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an elastic pin with dust-proof properties, comprising an elastic pin body, a pin rod inserted inside the elastic pin body, a helical spring sleeved on the surface of the pin rod, a polymer coating on the outside of the elastic pin body, and a silicone coating on the outer surface of the polymer coating.

[0005] As a preferred embodiment, the outer surface of the silicone coating is coated with a nano-coating, and the outer surface of the nano-coating is coated with a polytetrafluoroethylene coating.

[0006] As a preferred embodiment, a sealing plug is inserted into the inner sealing part of the upper end of the elastic pin body, and a sealing cap is fixedly installed on the upper end of the sealing plug.

[0007] As a preferred embodiment, the elastic pin body is made of a highly elastic material, such as stainless steel, spring steel, or a special alloy.

[0008] As a preferred embodiment, the outer surface of the polytetrafluoroethylene coating is further designed with fine textures or uneven structures.

[0009] As a preferred embodiment, the polytetrafluoroethylene coating, nano-coating, silicone coating, and polymer coating on the exterior of the elastic pin body are all made by spraying or electrophoretic coating processes.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This utility model uses a self-cleaning material for the main body of the elastic pin, and performs nano-coating treatment on the surface of the elastic pin with polytetrafluoroethylene and nanomaterials to form a superhydrophobic surface, preventing dust and dirt from adhering. In addition, micro-nano structures are designed on the surface of the elastic pin to enhance the dust-proof effect.

[0012] 2. This utility model uses nano-coating or chemical treatment to form a superhydrophobic layer on the surface. Water droplets form spherical shapes on the surface and roll off quickly, carrying away dust particles and reducing the adhesion between dust and the surface, making it difficult for dust to adhere. By simulating a dusty environment, the dust-proof performance of the elastic pin is tested to ensure that the coating and structural design can effectively prevent dust adhesion. Attached Figure Description

[0013] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0014] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0015] Figure 3 This is a front sectional view of the elastic pin of this utility model.

[0016] In the diagram: 1. Elastic pin body; 2. Pin rod; 3. Spring; 4. PTFE coating; 5. Nano coating; 6. Silicone coating; 7. Polymer coating; 8. Sealing cap; 9. Sealing plug. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. Example

[0019] Please see Figure 1 As shown, this utility model provides an elastic pin with dust-proof properties, including an elastic pin body 1, a pin rod 2 inserted inside the elastic pin body 1, a helical spring 3 sleeved on the surface of the pin rod 2, a polymer coating 7 coated on the outside of the elastic pin body 1, and a silicone coating 6 coated on the outer surface of the polymer coating 7.

[0020] This technical solution uses a self-cleaning material, polytetrafluoroethylene, and nanomaterials to coat the surface of the elastic pin body 1 with a nano-coating to form a superhydrophobic surface, preventing dust and dirt from adhering. Furthermore, micro-nano structures are designed on the surface of the elastic pin to enhance the dust-proof effect. Example

[0021] Based on Embodiment 1, this utility model is as follows: Figure 3 As shown, the outer surface of the silicone coating 6 is coated with a nano-coating 5, and the outer surface of the nano-coating 5 is coated with a polytetrafluoroethylene coating 4.

[0022] Adopting such Figure 1 The technical solution shown uses a nano-coating 5 or chemical treatment to form a superhydrophobic layer on the surface. Water droplets form spheres on the surface and roll off quickly, carrying away dust particles and reducing the adhesion between dust and the surface, making it difficult for dust to adhere. By simulating a dusty environment, the dust-proof performance of the elastic pin is tested to ensure that the coating and structural design can effectively prevent dust adhesion.

[0023] Secondly, in the technical solution, a sealing plug 9 is inserted into the internal seal of the upper end of the elastic pin body 1, and a sealing cover 8 is fixedly installed on the upper end of the sealing plug 9; the elastic pin body 1 is made of a highly elastic material, such as stainless steel, spring steel or special alloy.

[0024] Its adoption is as follows Figure 1 The technical solution shown is equipped with a sealing cap 8 at the end to prevent dust from entering the interior. It is suitable for industrial equipment and household appliances and has good dust prevention and elastic recovery performance. Through the above design, it can be ensured that the elastic pin has good elasticity while the surface has excellent dust prevention performance. It is suitable for a variety of dust prevention applications. It uses high elasticity stainless steel material to ensure good elasticity and wear resistance. The internal helical spring 3 ensures that it has good elastic recovery performance. Example

[0025] This utility model is as follows Figures 1-3 As shown, the outer surface of the polytetrafluoroethylene coating 4 is further designed with fine textures or uneven structures; the polytetrafluoroethylene coating 4, nano coating 5, silicone coating 6 and polymer coating 7 on the outside of the elastic pin body 1 are all made by spraying or electrophoretic coating processes.

[0026] The above technical solution involves designing fine textures or uneven structures on the coating surface to reduce dust adhesion and facilitate cleaning. At the same time, the coating material is applied using processes such as spraying, dipping, or electrophoretic coating to ensure that the coating evenly covers the entire surface of the elastic pin.

[0027] The working principle of this utility model is as follows: by using a material with self-cleaning properties for the elastic pin body 1, and applying a polytetrafluoroethylene coating 4 and a nano coating 5 to the surface of the elastic pin, a superhydrophobic surface is formed to prevent dust and dirt from adhering. The end is equipped with a sealing cap 8 to prevent dust from entering the interior. Furthermore, a micro-nano structure is designed on the surface of the elastic pin to enhance the dust prevention effect.

[0028] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0029] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A resilient pin with dust-proof properties on its surface, comprising a resilient pin body (1), characterized in that: A pin (2) is inserted inside the elastic pin body (1), a helical spring (3) is sleeved on the surface of the pin (2), a polymer coating (7) is coated on the outside of the elastic pin body (1), and a silicone coating (6) is coated on the outer surface of the polymer coating (7).

2. The elastic pin with anti-dust properties on its surface according to claim 1, characterized in that: The outer surface of the silicone coating (6) is coated with a nano-coating (5), and the outer surface of the nano-coating (5) is coated with a polytetrafluoroethylene coating (4).

3. The elastic pin with anti-dust properties on its surface according to claim 1, characterized in that: The upper end of the elastic pin body (1) is internally sealed with a sealing plug (9), and the upper end of the sealing plug (9) is fixedly installed with a sealing cap (8).

4. The elastic pin with anti-dust properties on its surface according to claim 1, characterized in that: The elastic pin body (1) is made of a highly elastic material.

5. The elastic pin with anti-dust properties on its surface according to claim 2, characterized in that: The outer surface of the polytetrafluoroethylene coating (4) is further designed with fine textures or uneven structures.

6. The elastic pin with anti-dust properties on its surface according to claim 1, characterized in that: The polytetrafluoroethylene coating (4), nano coating (5), silicone coating (6) and polymer coating (7) on the outside of the elastic pin body (1) are all made by spraying or electrophoretic coating process.